[INFO] fetching crate mysql_common 0.22.0...
[INFO] checking mysql_common-0.22.0 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate mysql_common 0.22.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mysql_common 0.22.0 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mysql_common 0.22.0
[INFO] finished tweaking crates.io crate mysql_common 0.22.0
[INFO] tweaked toml for crates.io crate mysql_common 0.22.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 53d90e8ba1cbe232e4708184a681d753110f164c01b819edfaac32b35c092bb0
[INFO] running `"docker" "start" "-a" "53d90e8ba1cbe232e4708184a681d753110f164c01b819edfaac32b35c092bb0"`
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling time-macros-impl v0.1.0
[INFO] [stderr]    Compiling time v0.2.9
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking rust_decimal v1.4.1
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking lexical v5.2.0
[INFO] [stderr]     Checking bigdecimal v0.1.0
[INFO] [stderr]     Checking mysql_common v0.22.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/packets.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         { Regex::new(r"^5.5.5-(\d{1,2})\.(\d{1,2})\.(\d{1,3})-MariaDB").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/packets.rs:35:36
[INFO] [stderr]    |
[INFO] [stderr] 35 |     static ref VERSION_RE: Regex = { Regex::new(r"^(\d{1,2})\.(\d{1,2})\.(\d{1,3})(.*)").unwrap() };
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:25:41
[INFO] [stderr]    |
[INFO] [stderr] 25 |     static ref DATETIME_RE_YMD: Regex = { Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap() };
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |         { Regex::new(r"^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         { Regex::new(r"^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{1,6}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:30:42
[INFO] [stderr]    |
[INFO] [stderr] 30 |     static ref TIME_RE_HH_MM_SS: Regex = { Regex::new(r"^\d{2}:[0-5]\d:[0-5]\d$").unwrap() };
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         { Regex::new(r"^\d{2}:[0-5]\d:[0-5]\d\.\d{1,6}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:33:43
[INFO] [stderr]    |
[INFO] [stderr] 33 |     static ref TIME_RE_HHH_MM_SS: Regex = { Regex::new(r"^[0-8]\d\d:[0-5]\d:[0-5]\d$").unwrap() };
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |         { Regex::new(r"^[0-8]\d\d:[0-5]\d:[0-5]\d\.\d{1,6}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/packets.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         { Regex::new(r"^5.5.5-(\d{1,2})\.(\d{1,2})\.(\d{1,3})-MariaDB").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/packets.rs:35:36
[INFO] [stderr]    |
[INFO] [stderr] 35 |     static ref VERSION_RE: Regex = { Regex::new(r"^(\d{1,2})\.(\d{1,2})\.(\d{1,3})(.*)").unwrap() };
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:25:41
[INFO] [stderr]    |
[INFO] [stderr] 25 |     static ref DATETIME_RE_YMD: Regex = { Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap() };
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |         { Regex::new(r"^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         { Regex::new(r"^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{1,6}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:30:42
[INFO] [stderr]    |
[INFO] [stderr] 30 |     static ref TIME_RE_HH_MM_SS: Regex = { Regex::new(r"^\d{2}:[0-5]\d:[0-5]\d$").unwrap() };
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         { Regex::new(r"^\d{2}:[0-5]\d:[0-5]\d\.\d{1,6}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:33:43
[INFO] [stderr]    |
[INFO] [stderr] 33 |     static ref TIME_RE_HHH_MM_SS: Regex = { Regex::new(r"^[0-8]\d\d:[0-5]\d:[0-5]\d$").unwrap() };
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/value/convert/mod.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |         { Regex::new(r"^[0-8]\d\d:[0-5]\d:[0-5]\d\.\d{1,6}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.39s
[INFO] running `"docker" "inspect" "53d90e8ba1cbe232e4708184a681d753110f164c01b819edfaac32b35c092bb0"`
[INFO] running `"docker" "rm" "-f" "53d90e8ba1cbe232e4708184a681d753110f164c01b819edfaac32b35c092bb0"`
[INFO] [stdout] 53d90e8ba1cbe232e4708184a681d753110f164c01b819edfaac32b35c092bb0